An unlikely combination of a KGB officer, an FBI agent, an imprisoned IRA man and a Basque separatist hunt down an even more unlikely assassin. Major Valentina Koslova (Diane Venora) was the tough scarred KGB agent.
Diane Venora reportedly wore the scar in public for a week before filming ‘to learn about the character’.
Peter Robb-King was key makeup supervisor; IMDb lists Tony Gardner as special makeup effects artist (uncredited).